lass::util::Semaphore Class Reference
[Threading]

Lean and mean synchronisation object, without OS support. More...

#include <thread.h>

Inheritance diagram for lass::util::Semaphore:

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Collaboration diagram for lass::util::Semaphore:

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Public Member Functions
	Semaphore (int iNumberOfSlots=1)
void	lock ()
const LockResult	tryLock ()
void	unlock ()
const bool	isLocked () const
Private Member Functions
void	swap (NonCopyable &)
Private Attributes
volatile int	freeSlots_

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Detailed Description

Lean and mean synchronisation object, without OS support.

See also:

SemaphoreLocker

Author:

Bram de Greve

Date:

2004

This semaphore is built upon atomic operations that are programmed in assembly.

Definition at line 335 of file thread.h.

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Constructor & Destructor Documentation

lass::util::Semaphore::Semaphore

(

int

iNumberOfSlots = 1

)

[inline]

Definition at line 338 of file thread.h.

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Member Function Documentation

void lass::util::Semaphore::lock

(

)

[inline]

Definition at line 343 of file thread.h.

References lass::util::atomicCompareAndSwap(), and LASS_ASSERT.

Referenced by lass::prim::Transformation3D< T >::inverse(), and lass::prim::Transformation2D< T >::inverse().

const LockResult lass::util::Semaphore::tryLock

(

)

[inline]

Definition at line 354 of file thread.h.

References lass::util::atomicCompareAndSwap(), LASS_ASSERT, lass::util::lockBusy, and lass::util::lockSuccess.

void lass::util::Semaphore::unlock

(

)

[inline]

Definition at line 370 of file thread.h.

References lass::util::atomicIncrement().

Referenced by lass::prim::Transformation3D< T >::inverse(), and lass::prim::Transformation2D< T >::inverse().

const bool lass::util::Semaphore::isLocked

(

)

const [inline]

Definition at line 374 of file thread.h.

void lass::util::NonCopyable::swap

(

NonCopyable &

)

[inline, protected, inherited]

Definition at line 60 of file non_copyable.h.

Referenced by lass::io::Image::readLine().

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Field Documentation

volatile int lass::util::Semaphore::freeSlots_ [private]

Definition at line 380 of file thread.h.

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The documentation for this class was generated from the following file:

• thread.h